STUB1/CHIP Antibody

STUB1/CHIP is an E3 ubiquitin ligase and co-chaperone of heat-shock protein 70 (Hsp70). STUB1/CHIP interacts with Hsp70 to monitor protein folding and direct misfolded proteins for proteasomal degradation. It has been found to also associate with Hsp90 to remove phosphorylated protein tau, a protein that accumulates in the brains of Alzheimers and Down’s syndrome patients. STUB1/CHIP has been reported to also have intrinsic chaperone activity and recognize non-native proteins in response to heat stress. In this way, STUB1/CHIP has been shown to be a direct chaperone for p53.